Adjustable brake-head.



AWLE. FOWLER, JR.

ADJUSTABLE BRAKE HEAD.

APPLICATION FILED JUNE 19, 1908.

Patented 0013.26, 1909.

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- nn 'r oFFiG WILLIAM E. FOWLER, JR., 0]? HAMMOND, INDIANA, ASSIGNOR T0SIMPLEX ItAILVVAY AEPLIANCE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATIONOF ILLINOIS.

ADJUSTABLE BRAKE-HEAD.

Specification or Letters Iatent.

Application filed. June-19, 1908. Serial No. 439,448.

To all whom it may concern:

Be it known that I, WILLIAM E. Fow- Jr., a'citizen of the United States,residing at Hammond, in the county of Lake and State of Indiana, haveinvented certain new and useful Improvements in Adjustable Brake-Heads,of which the following is a specification.

The main and leading object ofthis invention is to provide a simple andefficient means for securing a brake-head on the end I of a brake beamin such manner that the head cannot move longitudinally of the beam butmay obtain the proper relation shoe carried by the'hea'd to the wheelperiphery on which it acts. On the sleeve receiving and accommodatingthe ends of the compression bar and tension rod of a brake beaimand onwhich the brake head is adapted to be mounted, I secure a bolt, screw,or the like having a screwthreaded connection therewith, and on thisbolt or stud I place a retainer or locking member which is adapted tobear against the exterior substantially cylindrical surface of the hubof the brake-head and may or may not have a serrated or roughened innerface in contact therewith. The stud or screw is intended to extendthrough a curved slot in the hub of the brake-head, thereby preventinglongitudinal displacement of the head but permitting it to have anangular adjustment which when secured or obtained is maintained by thebearing of the retainer or looking member on the head.

On the accompanying sheet of drawings I have shown a desirableembodiment of this invention, and in the various views like parts aresupplied with the same reference characters. Figure 1 is a sectionthrough the brakehead, the sleeve on the end of the brakehead, and otherparts illustrating in detail the members employed in carrying out myinvention; Fig. 2 is a bottom plan view of of the brakethe brake-headshown in Fig. 1; Fig. 3 is a face view showing the serrated concavesurface of the retainer or locking member; Fig. 4 is an end view of thesame; and Fig. 5 1s a view similar to Fig. 1' of a modified construction in which no cobperating roughened or serrated'surfaces areemployed.

On a cylindrical sleeve 10 mounted, as is customary, on the end of thecompression be adjusted angularly thereon to bar and tension rod of abrake-beam (not shown), I provide a brake-head 11 adapted to turn on thesleeve 10 to secure the proper angular adjustment .of the head so thatthe shoe which it carries will be in proper re lation to the peripheryor tread of the car wheel. As is clearly indicated, the hub 12 of thebrake-head 11 is supplied in its bottom portion with a curved slot 13extended therethrough, the exterior surface 14 of the hub 12 on oppositesides of the slot being transversely serrated, scored, or roughened.The. sleeve 10 has in register with the slot .13 a threaded aperture 15which'receives the inner screw-threaded end of a bolt, screw,

stud, or the like 16, in the present instance a machine screw or boltwith an angular head 17 being illustrated. This screw orv bolt passesthrough a central opening 18 in a retainer or looking member 19 having aconcave serrated or roughened face 20 adapted to bear against the convexroughened surface 14 of the hub of the brake-head. It will be noticedthat this retainer or locking member is of general rectangular shape andis readily accommodated between the parallel flanges 21 of thebrake-head. In order to prevent turning of the screw or bolt l6-and itsresultant disengagement with the sleeve 7 10, I provide a lock 22 whichhas one end 23 bent over in contact with a face of the retainer 19, itsopposite end 24: being bent over so as to bear against'one of the flatsurfaces of the head 17. Owing tothe fact that the surface 20 of theretainer'l9 is of concave shape, it can not be turned on the stud orscrew 16 when bearing against the convex face 14 of the brake-head hub,so that this retainer may be employed as a sort of anchor to preventturning of the.

screw or bolt 16 by means of a lock 22 of the usual and generalconstruction. The partsof this construction are assembled by sliding thebrake-head on to the sleeve 10 longitudinally or axially, the sleevebeing received by the cylindrical hollow: recess of the hub 12,.asisapparent. The bolt or screw 16 with thelock 22 andretainer l9 thereon isthenpassed through the'slot 13 and screwed. into the threaded aperture15, this screw or stud preventing lengthwise shifting of the brake-headand hub on the internal sleeve. The head may then be turned to theproper angular osit on on its supporting sleeve, after which t e screwor bolt 16 may be turned home so as to cause the firm engagement of theroughened surfaces 14 and 20 of the hub and retainer, respectively. Thenthe end 24 of the lock 22 may be bent up so as to bear against one ofthe flat surfaces of the head 17 and prevent backward turning andloosening of the screw or bolt 16.

-The construction shown in Fig. 5 is substantially like that indicatedin Figs. 1 to 4:, inclusive, except that those convex portions of thehub 12 forming a part of brake head 11 against which the concave face ofthe retainer 19 is adapted to bear are not roughened or scored, theconcave face of the retainer being also smooth. In some cases thefriction between these cooperating or concave and convex comparativelysmooth surfaces is suflicient to effectually prevent turning of thebrake head on the sleeve. This construction is susceptible ofconsiderable variation in the structural features of its embodiments,and it is therefore to be understood that the invention is not limitedto the precise features of construction shown and described. v

I claim: 1. In a device of thecharacter described, the combination ofabrake-beam, a brakehead having a rough external surface fitted on andangularly adjustable on said brakebeam, and means mounted on saidbrakebeam and engaging said rough external surface of said brake-head tomaintain the latter in adjusted angular position, substantially asdescribed.

2. In a device of thecharacter described, the combination of abrake-beam, a brakehead fitted on and angularly-adjustable on saidbrake-beam, said brake-head having a convex external surface, and meanswith-a concave face bearing against said convex surface, mounted on saidbrake-beam, and adapted to hold said brake-head in adjusted angularposition, substantially as described.

3. In a' device of the character described, the combination of abrake-beam, a slotted brake-head fitted on and angularly-adjustable onsaid brakebeam,' said brake-head having a convex external surface, andmeans extended through said slot, mounted on said brake-beam, and havinga concave face bearing against said convex surface and adapted to holdsaid brake-head in adjusted angular position, substantially asdescribed.

4. In a device of the character described, the combination of abrake-beam, a slotted brake-head fitted on and angularly-adjustable onsaid brake-beam, said brake-head having a convex roughened externalsurface, and means extended through said slot, mounted on saidbrakebeam, and having a concave roughened surface bearing against saidconvex roughened surface and adapted to hold said brake-head in adjustedangular position, substantially as described.

- mounted on the beam,

5. In a device of the character described,

the combination of a cylindrical sleeve.

adapted to fit over the ends of the tension and compression members of abrake-beam, a brake-head fitted on and angularly-ad ustable on saidsleeve, and means mounted on said sleeve and adapted to bear against theexternal surfaceof said brake-head to hold the latter in adjustedangular position, subover the ends of the tension and compressionmembers of a brake-beam, a slotted brakehead fitted on andangularly-adjustable on said sleeve, said brake-head having a roughenedexternal surface, and means mounted on said sleeve, extended throughsaid slot, and provided with a roughened surface adapted to bear againstthe roughened surface of said brake-head to hold said brakehead inadjusted angular position, substantially as described.

8. In a device of the character described, the combination of a sleeveadapted to fit over the ends of the tension and compression members of abrake-beam, and having a screw-threaded aperture, a slotted brakeheadfitted on and angularly-adjustable on said sleeve, said brake-headhaving a convex external surface, a screw extended through the slot ofsaid brake-head and engaging the threads of'the aperture of said sleeve,said screw having a head flat on its side, a retainer on said screwhaving a concave face adapted to bear against the convex surface of saidbrake-head to hold said brake-head inadjusted angular position, and alock coacting with said retainer and the flat side of the head of thescrew to prevent turning or loosening of the'screw, substantially asdescribed.

9. A brake-beam, a brake-head havin a hub by means of which said head isrotataiwly. and means carried by the beam to engage the. outer side ofsaid hub for locking said brake-head in adjusted posit1on.

10. A brake beam, a brake-head having a hub by means of which said headis rotatably mounted on the beam, a locking block engaging the outerside of said hub for locking said brake head in ad'usted position, andmeans for operating the lock.

11. A brake beam, a biake-head having a I hub by means ofwhich said headis rotatably mounted on the beam, said hub being slotted,

a locking block having a portion extending 5 through said slot andengaging the beam,

and means for holding said block in engagement with the cuter side ofsaid head.

12. A brake head having a hub, said hub being provided with a slotextending part Way around the hub, the peripheral surface 19 of said hubadjacent to said slot being toothed, substantially as described.

. WILLIAM E. FOWLER, JR.

' Witnesses: 4

FREDERICK O. Goonwm,

v ALTER M. FULLER.

